Oil-lamp.



3. F. KAESTNER. OIL LAMP.

, APPLICATION FILED JAN. 8, 191A 1,099,054, Patented June 2, 1914.

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Warwzey;

F. F. KAESTNER.

OIL LAMP.

APPLIOATION FILED JAN. 8, 1914.

1 ,O99,054 Patented June 2, 1914.

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COLUMBIA PIANOORAPM cnnwaillma'rmd, 0-C- STATES PATENT OFFICE.

FRANZ FRIEIDRTCH KAESTNER, 0F ERFURT, GER-MANY.

oiL-LAMP.

To all whom it may concern Be it known that I, FRANZ FRIEDRICH KAnsrNnR, a subject of the German Emperor, residing at Erfurt, Kingdom of Prussia, Germany, have invented certain new and useful Improvements in or Relating to Oil-Lamps, of which the following is a specification.

My invention relates to an oil lamp with a flat wick burner.

It consists in the wick tube being twisted so that the entire width of the wick is exposed in the direction in which the beam of light is to fall.

The invention is particularly suitable for use in storm lanterns constructed on the regenerating system, with air supply pipes, as well as in reflectors in which the light is to be projected forward and which are pro vided with a reflecting mirror of any desired material. In storm lanterns constructed on the regenerating system, the two air supply pipes are carried laterally of the oil tank to the central tube above the chimney, and as a result of this arrangement the wick adjusting spindle must be so positioned that the operation of its turning button is not interfered with by the air supply pipes. Consequently the adjusting spindle must be arranged at an angle to the air supply pipes, and this arrangement, owing to the spindle hitherto being arranged parallel to the long side of the flat wick tube, results in the wick being disposed at an angle to a vertical plane passing through the air supply pipes, and as the wick projects the greatest amount of light from its widest surface, the greatest beam of light in such storm lanterns is not projected at a right-angle to the vertical plane of the air supply pipes, but at an angle thereto. This drawback exists also in lamps provided with reflectors, in which the wick adjustment spindle is inclosed by the inner wall of the reflector. In such lamps, it is impossible to adjust the regulating spindle for the wick, so that the flame of the wick tube is oblique relatively to the direction of projection of the reflector, or in other words the light does not fall with its full width in the focus of the reflector and is not again projected by the same outward. This drawback is obviated in my invention by twisting the flat wick tube helically so that the upper end of the wick tube, and consequently the burner cap, are in or parallel to, the plane of the air supply pipes,

Specification of Letters Patent.

Application filed January 8, 1914. Serial No. 811,042.

Patented. June 2, 1914.

or at a right-angle to the axis of the reflector, so that the light in front of the flat wick spreads in both directions and the full width of the fiat wick is reflected. This arrangement of twisting the wick tube of a flat burner, has a further great advantage that the wick is automatically looked, that is to say, not shifted by any vibrations of the lamp which are transmitted to the wick spindle and have the tendency to turn it.

As is well known, vibrations of the lamp, or generally any shocks, produce a lowering of the wick, and for instance in the case of locomotive lamps, it is necessary for that reason to provide special locking devices on the wick adjustment spindle. Owing, however, to the flat tube being helically twisted according to this invention, and thus the wick also twisted, there is an automatic locking of the wick, and by this automatic locking, the spindle of the wick is prevented from being turned by shocks.

A construction of a regenerating storm lamp according to my invention with a flat wick and air supply pipes, is illustrated in the drawings, in which- Figure 1 is a front elevation, partly in section, Fig. 2 is a horizontal section on line A-B, Fig. 1, Fig. 8 is a partial longitudinal section of Fig. 1 turned through an angle of 180, Fig. 4 shows the device on an enlarged scale in plan, with the burner hood removed and the wick tube in section, Fig. 5 is a front elevation of a lamp equipped with a reflector, Fig. 6 is a vertical section of said lamp on line 66, Fig. 7, and Fig. 7 is a horizontal section on line 77, Fig. 6.

a is the wick tube of a fiat burner, Z) the spindle for regulating the wick c, and c the hand wheel on said spindle. The wick a is twisted so that its upper open end f is parallel with or lies in a plane passing vertically through the air supply pipes g,whereby the light from the flame is projected in the whole width of the wick at a right-angle to the air supply pipes forward and back ward. The regulating spindle b, as shown in the drawing, is at an angle to the plane passing normally through the air supply pipes. The same construction could be used also in lamps with flat burners and reflectors, as shown in Figs. 5 to 7, in which case the wick regulating spindle b disposed obliquely to the axis of the light beam of the reflector r, with its hand wheel 0, is arranged in the interior of the reflector. In accordthe desired direction, and a wick regulating spindle disposed at an angle to the upper opening of the wick tube.

In testimony whereof I have hereunto set 15 my hand in presence of two subscribing witnesses.

FRANZ FRIEDRICH KAESTNER- Witnesses RUDoLF KAESTNER, HULDA SoHRoDnR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

